Jacob welti



UNITED STATES PATENT OFFI E.

JACOB lVELTI, OF NEWV YORK, N. Y., ASSIGNOR OF ONE-HALF TO SIGMUND S.HIRSCHLER, OF SAME PLACE.

COMPOSITION FOR WATERPROOFING TEXTILE MATERIALS.

SPECIFICATION forming part of Letters Patent No. 407,265, dated July 16,1889.

Application filed June 23, 1888, Serial No. 278,000. (No specimens.)

To all whom it may concern.-

Be it known that I, JACOB WELTI, a citizen of the Republic ofSwitzerland, residing at New York, in the county and State of New York,have invented new and useful Improvem ents in Composition forTaterproofing Textile Materials, of which the following isaspecification.

This invention relates to a composition by means of which textilefabrics of silk, wool, cotton, hemp, flax, or other fibrous materialscan be rendered water-proof, while at the same time the passage of airthrough said fabrics is not stopped up.

The composition which forms the subjectmatter of my present applicationfor a patent consists of glue, sugar of lead, alum, and water, and theseingredients are mixed together in about the following proportions: Glue,from one-fourth to two parts; sugar of lead, from one to twenty parts;alum, from one to twenty parts; water, one hundred parts-that is to say,if my composition is to be used for linen fabrics I take about one andone half poundof glue, about fifteen pounds of sugar of lead,

and about fifteen pounds of alum and dissolve these ingredients in onehundred pounds of Water. For cotton or Woolen fabrics, or for fabricsmade partly of wool and partly of cotton or other fibers, known as mixedfabrics, the proportion must be changed, as will be readily found out byexperience. After the compound has been prepared in the manner abovedescribed, I immerse the fabric to be treated in the solution asufficient length of time to produce the desired effect, the length oftime being dependent upon the nature of the fabric and its color.

WVhat I claim as new, and desire to secure by Letters Patent, is

A Waterproofing composition consisting of glue, sugar of lead, alum, andwater, substantially as herein described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing Witnesses.

JACOB WELTI. \Vitnesses:

W. O. I-IAUFF, E. F. KASTENHUBER.

